EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8943.11 Propachlor, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 1918-16-7 Price on request 30064 EPA Method 502/524 High Conc VOC Mix #7, 2000µg/ml in MeOH,1ml Price on request 55202 Sodium Chloride for 55201 and 55203 Price on request